@cubecolour – thank you! problem solved. And you’re right, of course, about the theme, but it’s testing well with our audience.
We found base64 several times, but never with () next to it. We’ve tried the search both through the Editor and with Dreamweaver.
Here is a link where the theme can be downloaded, if anyone else would like to take a crack at finding the line(s) of code… http://thewordpresstheme.com/free-theme/the-best-recipes.xhtml
Yes, we’ve combed over every inch of every .php document.